1981 Colt Gov't Model MK IV/Series 70 manual,4-7/8" x 4-7/8" with 37 pages.Dated 1981 on the front cover and printed on the back cover is "Part No. 94858 Rev.B Jul 81".The firearm record on page 36 has not been filled in. Very good condition with darkening near the spine on the front and the scrape at the top right of the cover